Why are you taking the paint off ? Here's one i refurbed .
I cleaned the wheel with AG engine and machine cleaner then dried it . Filled all the deep scratches with Upol D Metallic Filler , left overnight to harden sanded it down with 320 grit wet and dry . This also gives the primer a good key as the 320 grit isn't too fine .
Next i primed the wheel , a couple of coats and used 320 grit wet and dry again .
Wash down the wheel to remove any dust or use a tac cloth .
Next i applied a couple of coats of colour then sanded down with 1500 grit wet and dry . Clean the wheel again to remove the dust . I used Rover storm grey . It's not a 100% match so the guy who mixed my paint added a touch of red to make the match better .
Final couple of colour coats then leave over night .
Then 3 coats of lacquer ( until your happy with the finish ) and leave over night again .
Final wet and dry with 1500 grit to smooth out any imperfections . Then washed , dried and polished with Meguiars scratch X .
http://www.paints4u.com/ProductDetails.aspx?productID=320